Leaf holder for books



June 10, 1930. K. HAYASHI LEA-F HOLDER FOR BOOKS Filed y 1929 2Sheets-Sheet 1 V Inventor fits fiajw/x/ A iiorney June 10, 1930 HAYASH]I 1,762,686

LEAF HOLDER FOR BOOKS Filed July 15, 1 29 2 shins-sheet 2 Inventor Aitorney Patented June 19, 193i) TEN OFF 165E KEN HAYASHI, 0FEVANSBULRGH, ALBERTA, CANADA LEAF HOLDER FORBOOKS' Application filedJuly 15, 1929. SeriaIN'o; 378 -5311 This invention relates to animproved accessory especially designed for use in association with booksand constructed to maintain the halves of the book open and to retainthe leaves open to facilitate reading, copying and the like.

The invention is in the nature of an attachment which is connected toand carried by the book to render it portable and it is made to permitit to be applied to the book in a manner to take care of the increasingthickness and decreasing thickness of the halves as the pages are turnedover from the beginning toward the end of the book.

In carrying the invention into effect, I have evolved and produced asimple and economical article which is susceptible of easy applicationand removal, which is not likely to tear the pages, which is out of theway, easy to manipulate, and otherwise efficient in fulfilling therequirements of an article of this class in a satisfactory manner.

The particular details and their specific association. and arrangementwill become more readily apparent from the following description anddrawings.

In the drawings:

Figure l is a perspective view of a book, showing it spread with theretaining device in operative position.

Figure 2 isatop plan view of the device itself as constructed inaccordance with the present invention.

Figure 3 is an end view observing the device in a position from left toright in Figure 1.

Figure 4: is a side view of the structure seen in Figure 3.

Figure 5 is a perspective view of one of the parts of the device.

'The major part of the device is in the nature of a frame and isgenerally desig nated by the reference character 6. I have found itexpedientto provide a frame of general ll-shaped configuration, thebight portion of which is adapted to be located on the exterior of theadjacent end of the book, and the arms 8 and 9 of which are adapted tobe inserted between the leaves 10 and 11 of the book, as observed inFigure 3.

The extremities of: these: arms 8 and 9' are pointed to facilitateinsertion. ()nthe centor-of the-bi-ght portion? is, an outwardlyprojecting finger grip 12 ofappro riate configuration,

The part 6 may bemade: from asmall tube; Atthepoints 13 and 14amupstrnok ears, these beinglocated adjacent the center. At theopposite-.ends-of the portion- 7? are similar; ears 15 and 16.: Theseears constt tute spaced 1 pairs-of hearings in which rock shafts 18 and:19 are mounted for oscillation. In. thisv way, I provide a pair' ofsuitable clamp members 20 and 21, for cooperation with the"oppositehalves of the book. The inner: ends-are formed with latcrallzbent and appropriately shaped operating, elements or. handle/s22; and23. Then, too, at this spointlprnvide retaining springs-24,01appropriate construction. The opposite ends ofthe shafts 18 andfil9. aredirected laterally and-in parallelism withthe arms 8 and 9. These-endportionsoverlie the-arms 8 and 9 andare of general arcuate configurationas indicated Lt-.25, and 26, respectively.

These. constitute the clamping fingers and it, will beobserved thattheyv terminate in retaining balls 2.7;Which rest upon the pages in";the position seen in, Figure 1.

These. clamp members 20 and 21 are so constructed. and. arranged as topermit the clamping; fingers25 and 26 to be swung back clear of thepages, so that the pages may be. turned over without interference. Thisavoids tearing of the pages. Particus larly; do; I wish to emphasize thefact that these? devices- 20and 21 are independently operable. Thus theleaves may be turned from either side of the book as desired, inaccordance with the will of the user. Obviously, the handles 22 and 23are arranged to cooperate with the finger grip 12 to facilitate theopening and closing of the respective clamping devices.

From the foregoing description and drawings it will be seen that I haveevolved and produced an unusually simple and inexpensive contrivancewhich is susceptible of ready attachment and detachment, which ismaintained on the book as long as desired and may be carried from placeto place with the book. It holds the halves of the book open andmaintains the pages or leaves fiat down to facilitate copying, reading,etc. The independent clamping devices are such as. to facilitatemanipulation and turning of the pages. It is thought, however, that byreading the description, a clear understanding of the invention, itsconstruction,

method of use and featuresand advantages will be had. Therefore a morelengthly description is believed to be unnecessary.

Minor changes in the shape, size andrearrangement of details comingwithin the field of invention claimed, may be resorted to, in actualpractice, if desired.

I claim:

1; As a new product of manufacture, a retainer of the class describedcomprising a substantially U-shaped member having its arm portionsconstructed for insertion be tween the leaves of an open book, a fingergrip carried by the intermediate portion of the bight of said frame, apair of individual clamping ,devices carried by said frame and havingoperating handles located for cooperation with said finger grip and alsoineluding leaf engaging fingers disposed over bearings, pairs ofindividual leaf clamping said arms. 1

2. In a structure of the class described, a substantially U-shapedattaching frame provided with pairs of longitudinally spaced bearings,pairs of individual leaf clamping devices each includinga shaft mountedfor oscillation in one pair of the bearings, each of said shafts beingformedon its'inner end with an operating handle and on its outer endwith a curvate' leaf engaging finger.

3. In a structure of the class described, a substantially U-shapedattaching frame provided with pairs of longitudinally spaced deviceseach including a shaft mounted for oscillation in one pair of thebearings, each of said shafts being formed onits inner end with anoperating handle and on its outer end with a curvate leaf engagingfinger, and a terminal ball on the extremity of the finger. I

In testimony whereof I affix my signature.

KEN HAYASHI.

